Twinstrike converts from sinuous robot mode to a two-headed dragon; his weapon can be back-situated in the form of Piston Cannon or used as his handheld Piston Hammer. Twinstrike combines with fellow Predacons Hun-Grrr, Blight, Rippersnapper and Windrazor to form Abominus. Twinstrike enjoys skulking among the perimeters of Predacon installations in the hopes of ambushing and devouring Autobot foes. In robot mode he is outfitted with razor-sharp teeth, muzzle horns and metal-skewing talons. In beast mode, Twinstrike delivers a two-pronged attack in the form of his Piston Cannon and fire-breathing jaws. Despite all aforementioned strengths, Twinstrike becomes jittery in the company of tiny creatures, humans and miniature robots included.